Senior Platform Engineer (Kubernetes/AWS)

CHARANJIT SINGH

Sr. Platform Engineer – Kubernetes / AWS / Containers

Enterprise Developer Experience Site Reliability Engineering AdSecOps

Hightstown, NJ 609-***-**** *********@*****.*** linkedin.com/in/charanjit-singh-a883848

CKA EMC Cloud Architect AWS Solutions Architect RHCE MS Information Security

EXECUTIVE SUMMARY

Enterprise platform and SRE leader with 25 years of progressive technology experience, including 12 years at Standard & Poor's (now S&P Global). Currently Sr. Platform Engineer at Travelers Insurance —Owned quarterly lifecycle management of enterprise Amazon EKS platforms, including control plane upgrades, managed add-ons, Kubernetes operators, Helm releases, and worker-node components; performed compatibility validation, upgrade planning, testing, production rollout, and post-upgrade troubleshooting. Proficient in Cloud technologies such as Jenkins, Kubernetes, Puppet, Linux, and AWS, GCP, AZ and OCI. Hands-on experience in designing, configuring, and managing High Availability clusters (RAC, Hadoop & K8s).

CORE COMPETENCIES

Platform & SRE

Amazon EKS (150 clusters) Kubernetes

Terraform Helm ArgoCD GitOps

Site Reliability Engineering (SRE)

Platform Product Roadmap Ownership

AWS: EKS / EC2 / EFS / VPC / IAM / S3

Security & Toolchain

AdSecOps DevSecOps RBAC

SonarQube Snyk Wiz

GitHub Jenkins GitHub Actions

Artifactory/JFrog Nexus

Dynatrace Datadog Prometheus

Leadership & AI

15 Engineers — US, Offshore India

$50M Budget / P&L Ownership

AI Budget Approval — Copilot & Claude

GitHub Copilot Claude MCP

SLA/SLO ServiceNow

PROFESSIONAL EXPERIENCE

Senior Platform Engineer – Kubernetes / AWS / Containers Travelers Insurance Hartford, CT

November 2022 – Present

●Performed quarterly upgrades and maintenance of Amazon EKS control plane, managed add-ons, Kubernetes operators, and Helm-based applications, ensuring platform compatibility, security, stability, and reliability.

●Managed quarterly EKS platform lifecycle upgrades, including Kubernetes control plane versions, EKS add-ons, Kubernetes operators, Helm releases, and supporting components.

●Validated version compatibility and dependencies between EKS control plane, worker nodes, add-ons, operators, Helm charts, and workloads before production upgrades.

●Planned and executed EKS upgrades using structured pre-checks, testing, rollout validation, monitoring, and post-upgrade health checks.

●Maintained and upgraded Helm charts and releases across Kubernetes environments, including configuration, values, dependencies, and version management.

●Troubleshot upgrade-related issues involving EKS, Kubernetes operators, Helm deployments, storage, networking, RBAC, and application workloads.

●Managed container images in Sonatype Nexus Repository, including image publishing, versioning, tagging, retention, and lifecycle management across development and production environments.

●Reviewed vulnerability scan results, coordinated remediation of critical/high-risk CVEs, and ensured updated base images and application dependencies were promoted through the deployment pipeline

Lead Solution Engineer(Platform & DevOps Engineering)

McGraw Hill Education New York, NY

2012 – November 2022 (10years)

10-year tenure evolving from Unix/Linux systems engineering into cloud-native platform leadership.

●Led technical platform and infrastructure strategy across McGraw Hill's engineering organization — transitioning teams from legacy Unix/Linux server estates to cloud-native Kubernetes/EKS platforms.

●Built and operated Kubernetes (EKS) infrastructure using Terraform; drove adoption of fully automated Infrastructure as Code, eliminating manual provisioning and reducing deployment errors.

●Deployed and managed ArgoCD for GitOps-based continuous delivery; designed CI/CD pipelines integrating Jenkins, GitHub Actions, and GitLab CI with EKS deployment targets.

●Managed Artifactory and Nexus artifact repositories; established GitHub-based Terraform module libraries for self-service developer provisioning.

●Administered large-scale Linux/Unix server environments (RHEL, CentOS, Solaris) and SAN/NAS storage infrastructure during the hybrid migration period.

●Supported Veritas Cluster Server (VCS), VxVM/VxFS, and high-availability cluster environments for business-critical applications throughout the transformation.

Senior Unix Systems Administrator & Storage Engineer

Standard & Poor's (S&P Global) New York, NY

2006 – 2012

●Administered mission-critical Linux/Unix infrastructure (RHEL, CentOS, Solaris, AIX, HP-UX) and enterprise SAN/NAS storage (EMC VMAX/DMX, IBM DS 40000, Hitachi) supporting S&P Global's global financial data operations.

●Designed and managed Veritas Cluster Server (VCS) environments for high-availability application and database failover; administered VxVM/VxFS for logical volume management and data protection.

●Led enterprise disaster recovery program: storage replication design, cluster failover testing, and DR execution for mission-critical systems.

●Automated administration using Shell, Perl, and Puppet — reducing manual toil across a 200+ server estate.

Systems Administrator

Standard & Poor's (S&P Global) New York, NY

2000 – 2006

●Provided Linux/Unix systems administration for production server environments supporting S&P Global's global financial data operations.

●Installed, configured, and maintained servers (Solaris, RHEL, HP-UX); supported SAN/NAS storage deployments, backup operations, and clustered HA environments.

CERTIFICATIONS

Certified Kubernetes Administrator (CKA)

AWS Certified Solutions Architect - Associate

Red Hat Certified Adinistrator (RHCA)

Veritas Certified Specialist (VCS)

EMC Cloud Architect - Virtualized Infrastructure Specialist

EMC2 Avamar Specialist - Implementation Engineer

EDUCATION

Master of Science, Information Security

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